Title :
Singlemode fibre frequency-modulated continuous-wave Sagnac gyroscope
Author_Institution :
PhotonTech, Vancouver, BC, Canada
Abstract :
A singlemode fibre frequency-modulated continuous-wave Sagnac gyroscope is described. The rotation speed of the fibre coil can be determined simultaneously by detecting the phase shift of the beat signal produced by two counter-propagating laser beams in a singlemode fibre coil. A resolution of 0.02°/s with a 100 m fibre coil has been observed.
Keywords :
Sagnac interferometers; fibre optic gyroscopes; frequency modulation; optical fibre testing; phase shifting interferometry; 100 m; beat signal phase shift detection; continuous-wave Sagnac gyroscope; counter-propagating laser beam signals; fibre coil rotation speed; single-mode fibre coil resolution; singlemode fibre frequency-modulated Sagnac gyroscope;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20046139
